Josephson Parametric Interferometer Amplifier
Original Publication Date: 1980-Feb-01
Included in the Prior Art Database: 2005-Feb-13
In a known parametric amplifier circuit wherein the amplification is the reflected power divided by the applied power, different resonance circuits for the idler and signal are provided. In this arrangement, the idler and signal resonance circuits are in parallel with a serially arranged voltage source and a Josephson junction. The capacitance C of the Josephson junction disturbs the system and puts a limit on the highest frequency available.